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Restoring method for link fault

A technology of link failure and recovery method, which is applied to the selection device of multiplexing system, digital transmission system, data exchange network, etc., and can solve the problems of inconvenient network resource planning and long recovery time

Inactive Publication Date: 2006-11-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this inter-domain link failure recovery method are: since end-to-end recovery across multiple control domains is required, the recovery time is long, and it is not convenient for network resource planning

Method used

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  • Restoring method for link fault
  • Restoring method for link fault

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Embodiment Construction

[0033] The core of the present invention is to adopt local fast recovery when the inter-domain link fails, and the recovery path can be dynamically calculated, pre-calculated, and resource reservation can be performed to realize recovery bandwidth sharing. At the same time, the recovery path can be another inter-domain Links can also be restored through other domains, which can greatly improve the recovery speed of inter-domain faults and save bandwidth. At the same time, it provides a coordination mechanism for inter-domain fast recovery and end-to-end recovery, which will be described in detail below.

[0034] refer to image 3 , this figure is the recovery method of the link failure of the present invention, the user can configure the recovery of the inter-domain link failure in the present invention, and the optional method is end-to-end recovery or local fast recovery. Specifically, the failure recovery The method mainly includes the following steps:

[0035] Step 11, wh...

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Abstract

The present invention discloses link fault recover method for fault recovery among domain in automatic exchange optical network. Method includes determining upstream node and down stream node of link fault among domain, starting up link local fault recover, using said upstream node and down stream node as source host node to proceed link fault local recovery. The present invention can reduce domain link fault recovery time and convenient for to continue network resources programming.

Description

technical field [0001] The invention relates to a recovery method for link failures, in particular to a recovery method for inter-domain link failures. Background technique [0002] The business scheduling of the traditional optical network adopts the static configuration method of the network management, and does not support the dynamic activation method. At the same time, the traditional optical network mostly adopts linear and ring networking, and the protection and restoration adopts multiplex section protection and SNCP protection, which is basically a static restoration. However, with the rapid development of data services and leased line services, the demand for network bandwidth is gradually increasing, and the requirements for dynamic allocation of network bandwidth are becoming more and more urgent. The network needs to provide dynamic provisioning capabilities and support the mesh network structure At the same time, it has flexible expansion capabilities and fast ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
CPCH04L45/04H04L45/22H04L45/28H04Q11/0062H04Q2011/0081H04L45/00
Inventor 徐慧颍许用梁
Owner HUAWEI TECH CO LTD
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